For some reason, the app's Google search ranking has fallen off a cliff. It is still the top result for queries like "Eco game calculator" on Bing, Yahoo, Duck Duck Go. But the GitHub repository is a higher result ranking than the actual app on Google.
Seems like this is resolved. Problem may have been having two identical sites with different domains? Modifying robots.txt to exclude non-prod env seems to have worked.
For some reason, the app's Google search ranking has fallen off a cliff. It is still the top result for queries like "Eco game calculator" on Bing, Yahoo, Duck Duck Go. But the GitHub repository is a higher result ranking than the actual app on Google.
Also, the develop url (https://eco-crafting-tool.vercel.app/) seems to have better Google result ranking than https://eco-calc.com. Need to tell search engines to ignore that url.